As America prepares for the highly anticipated debate Tuesday between former President Donald Trump and Democratic nominee Kamala Harris, a former member of the Trump administration says Joe Biden's vice president "needs to be told what her policies are."

Appearing on "Sunday Morning Futures" on the Fox News Channel, former Housing and Urban Development Secretary Dr. Ben Carson said Harris "needs to be told what her policies are, because she doesn't really know what they are. Nobody else does either.

"Donald Trump doesn't have to prep because the truth is always the truth. You don't have to try to figure out what things will resonate with people, you just say who you are. He's very transparent. And I think the people will appreciate that. So it's going to be a widely watched debate. It's going to be a lot of fun."